This books is of considerable historical in the study of Buddhist texts, and the Prajñāpāramitā literature in particular.
Trying to read online is frustrating as many of the pages are missing, or unreadable; and on some of the pages the margins cut off portions of the text.
The full pdf seems to be fine though. Go to "all files HTTPS" to download it.
Another text of some interest in this collection is http://archive.org/stream/actesdusiximeco01unkngoog#page/n206/mode/1up